"""Runtime adapters: signature wrappers, no execution on the host."""
HEADERS={
 'python':'', 'javascript':'', 'lua':'',
 'cpp':'#include <iostream>\n#include <string>\n#include <vector>\n#include <algorithm>\n#include <cstdlib>\n',
 'c':'#include <stdio.h>\n#include <stdlib.h>\n#include <string.h>\n',
 'csharp':'using System;\nusing System.Linq;\nusing System.Collections.Generic;\n',
 'rust':'use std::io::{self, Read};\n',
}

def wrap_source(language,kind,code):
    """Candidate function plus a fixed stdin/stdout adapter. No expected answers."""
    if language=='python':
        expr={'scalar':'int(line)','string':'line','array':'list(map(int,line.split())) if line else []'}[kind]
        tail=f'\nimport sys\nline=sys.stdin.readline().rstrip("\\n")\nprint(solve({expr}))\n'
    elif language=='javascript':
        expr={'scalar':'Number(line)','string':'line','array':"line ? line.split(' ').map(Number) : []"}[kind]
        tail=f"\nconst line=require('fs').readFileSync(0,'utf8').replace(/\\n$/, '');\nconsole.log(solve({expr}));\n"
    elif language=='lua':
        init={'scalar':'local v=tonumber(line)','string':'local v=line','array':'local v={}; for n in line:gmatch("%-?%d+") do v[#v+1]=tonumber(n) end'}[kind]
        tail='\nlocal line=io.read("*l") or ""\n'+init+'\nprint(solve(v))\n'
    elif language=='cpp':
        init={'scalar':'long long v; std::cin>>v;','string':'std::string v; std::getline(std::cin,v);','array':'std::vector<long long> v; long long x; while(std::cin>>x) v.push_back(x);'}[kind]
        tail='\nint main() { '+init+' std::cout << solve(v) << "\\n"; }\n'
    elif language=='c':
        init={'scalar':'long long v; scanf("%lld",&v); printf("%lld\\n",solve(v));',
           'string':'char v[512]; if(!fgets(v,sizeof v,stdin)) v[0]=0; v[strcspn(v,"\\n")]=0; printf("%s\\n",solve(v));',
           'array':'long long v[64]; int n=0; while(n<64 && scanf("%lld",&v[n])==1) n++; printf("%lld\\n",solve(v,n));'}[kind]
        tail='\nint main(void) { '+init+' return 0; }\n'
    elif language=='csharp':
        expr={'scalar':'long.Parse(line)','string':'line','array':'line.Length==0 ? new long[0] : line.Split(\' \').Select(long.Parse).ToArray()'}[kind]
        tail='\npublic class Harness { public static void Main() { string line=Console.ReadLine() ?? ""; Console.WriteLine(Solution.Solve('+expr+')); } }\n'
    elif language=='rust':
        expr={'scalar':'line.parse::<i64>().unwrap()','string':'line.to_string()','array':'line.split_whitespace().map(|x| x.parse::<i64>().unwrap()).collect()'}[kind]
        tail='\nfn main() { let mut text=String::new(); io::stdin().read_to_string(&mut text).unwrap(); let line=text.strip_suffix("\\n").unwrap_or(&text); println!("{}",solve('+expr+')); }\n'
    else:raise ValueError(language)
    return HEADERS[language]+code+'\n'+tail

COMMANDS={
 'python':('solution.py',['python3','-m','py_compile','solution.py'],['python3','-I','solution.py']),
 'javascript':('solution.js',['node','--check','solution.js'],['node','solution.js']),
 'lua':('solution.lua',['luac','-p','solution.lua'],['lua','solution.lua']),
 'cpp':('solution.cpp',['g++','-std=c++17','-O0','solution.cpp','-o','program'],['./program']),
 'c':('solution.c',['gcc','-std=c11','-O0','solution.c','-o','program'],['./program']),
 'csharp':('solution.cs',['mcs','-out:program.exe','solution.cs'],['mono','program.exe']),
 'rust':('solution.rs',['rustc','--edition=2021','-C','opt-level=0','solution.rs','-o','program'],['./program']),
}